Struggling with how to reverse words in a sentence using Java?
Confused between String and StringBuilder for interview problems?

Welcome to The Techzeen, your go-to DSA channel where Java concepts are explained in simple Hindi/Urdu with real interview coding practice!

In today’s video, I’ll explain:

What is StringBuilder and Why It's Better than String
Immutable vs Mutable concepts
Efficiency in memory and speed
Real-world relevance in interviews

Interview Problem: Reverse Words in a Sentence
Input: "I love Java"
Output: "Java love I"
Dry run + Diagram explanation
Clean Java implementation in IntelliJ IDEA
Step-by-step explanation of logic and flow

This problem is frequently asked in TCS, Infosys, Accenture and mastering it improves your string handling and logic-building confidence.

Everything is explained beginner-friendly style in simple language with Java code walkthrough.

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